LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 224 (Mechanical Brake System - Base (Service Information)) >> Base - Service Information >> Hydraulic/Mechanical >> Caliper - Front Twin Piston Disc Brake >> Assembly >> Caliper - Front Disc Brake - Twin Piston

Caliper - Front Disc Brake - Twin Piston

WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Dirt, oil, and solvents can damage caliper seals. Ensure assembly area is clean and dry.
NOTE: Always use new, clean Mopar® DOT 3 Motor Vehicle Brake Fluid when assembling brake caliper.
NOTE: Never use old or used piston seals or boots for assembly.
Fig 1: Installing Piston Seals
GC0014376Courtesy of CHRYSLER LLC
  1. Lubricate caliper pistons, piston seals (1) and piston bores (2) with clean, fresh brake fluid.
  2. Install NEW piston seal (1) into groove of each caliper piston bore (2).
    NOTE: Make sure seal is fully seated and not twisted in groove.
    Fig 2: Installing Boot on Caliper Piston
    GC0014379Courtesy of CHRYSLER LLC
  3. Install NEW boot (1) on each piston (2) and work boot lip into groove at top of piston. Stretch boot rearward straightening boot folds, then move boot forward as necessary until folds snap uniformly into place.
    Fig 3: Installing Pistons In Caliper
    GC0014375Courtesy of CHRYSLER LLC
  4. Install each piston (1), one at a time, into its caliper piston (2) bore, pressing piston down to bottom of bore using hand-pressure. Using a piece of wood or wooden hammer handle may also suffice as long as piston and boot damage is avoided.
    Fig 4: Measuring Dust Boot Heights
    GC0014378Courtesy of CHRYSLER LLC
    CAUTION: When seating dust boots in following step, use care not to over-install boots or damage will occur. Each boot (2) will bottom in the counterbore before the top of the boot reaches the surface of the caliper. The boot will bottom with approximately 2 mm (1/16 inch) (3) of boot still showing above caliper housing.
    Fig 5: Seating Boots Using Tools 9315 & C-4171
    GC0014377Courtesy of CHRYSLER LLC
  5. Seat dust boots (3) in caliper counterbores using Installer (2), Special Tool 9315, with Handle (1), Special Tool C-4171. Install each dust boot until it bottoms. Do not over-seat dust boot or damage will occur.
    Fig 6: Twin Piston Caliper Bleeder Screw
    GC0014374Courtesy of CHRYSLER LLC
  6. Install caliper bleeder screw (2) in caliper housing (1). Tighten bleeder screw to 15 N.m (125 in. lbs.) torque.
  7. Install caliper on vehicle. See INSTALLATION .